English Reference
noun · adjective · verb

vassal

n. · adj. · v.
US /ˈvæsəɫ/ UK /vˈæsəl/ vas·sal UK spelling vassaled, vassaling, vassalling, vassals

  1. 01 C2 Proficiency ArchaicFormal Law

    n.in the past, a man who was given land by a lord and promised to fight for him in return.

    n.a person granted the use of land by a feudal lord in return for homage, fealty, and usually military service.

    Simple

    The king rewarded his most loyal vassal with a large estate in the north.

    In context

    Under the feudal system, the vassal was obligated to provide forty days of military service annually to his liege lord.

    Usage

    Often used in historical or legal discussions of the Middle Ages.

    Teacher's tip

    This is a highly specific historical term; students will mostly encounter it in history books or fantasy literature.

    subjectservantliegeman
  2. 02 C2 Proficiency Formal

    n.a person or a country that is controlled by or depends on a more powerful one.

    n.a person, organization, or nation that is subordinate or subservient to another.

    Simple

    The smaller country became a vassal of its powerful neighbor to avoid being invaded.

    In context

    Critics argued that the trade agreement effectively turned the smaller nation into a corporate vassal, stripped of its economic sovereignty.

    Usage

    Commonly used in political science to describe 'vassal states'.

    Teacher's tip

    When used today, it is often a metaphor for a lack of independence in international relations.

  3. 03 C2 Proficiency FormalLiterary

    adj.acting like a servant or being in a lower position than someone else.

    adj.having the status of a vassal; characterized by submission or subservience.

    Simple

    The dictator expected a vassal-like loyalty from all his ministers.

    In context

    The treaty established a vassal relationship between the two territories, ensuring the dominant power controlled all foreign policy.

    Usage

    Usually appears before a noun like 'state', 'status', or 'relationship'.

    Teacher's tip

    This adjective form is less common than the noun but appears in academic writing about power dynamics.

    subservientslavishservile
  4. 04 C2 Proficiency FormalLiterary

    v.to put someone or something in a position where they are controlled by another.

    v.to reduce to the position of a vassal; to subject to the control of a superior power.

    Simple

    The empire sought to vassal the surrounding tribes through debt and military threats.

    In context

    By controlling the region's water supply, the corporation managed to effectively vassal the local government.

    Usage

    This is a transitive verb that requires a direct object.

    Teacher's tip

    The verb form is quite rare; 'subjugate' or 'subordinate' are much more common in modern English.

    emancipatefree

President Trump has told us, repeatedly and in his own words, what he wants: a Canada reduced at best to a compliant American vassal, if not the 51st state outright.

Toronto Sun· 26 Aug 2026

He said Mr Trump wants to make Canada a vassal state.

BreakingNews.ie· 24 Aug 2026

From Middle English vassal, from Old French vassal, from Medieval Latin vassallus (“manservant, domestic, retainer”), from Latin vassus (“servant”), from Gaulish wassos (“young man, squire”), from Proto-Celtic wastos (“servant”) (compare Old Irish foss and Welsh gwas).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin cel-pro *wastos
Level C2 · Proficiency
Frequency Occasional
Updated